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Noun: penicillin  ,pe-ni'si-lin
  1. Any of various antibiotics obtained from Penicillium moulds (or produced synthetically) and used in the treatment of various infections and diseases
    "The discovery of penicillin revolutionized the treatment of bacterial infections"

Derived forms: penicillins

Type of: antibiotic, antibiotic drug

Encyclopedia: Penicillin